Wireless Internet Security: Architecture and Protocols


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Transport-level security, also known as channel security, deals with the point-to-point communication between a wireless client and the enterprise data source. This involves communication over both wireless and wireline channels. This discrepancy leads to one of the main WAP security issues. But before we discuss that topic, we will examine the features of WTLS. Wireless Transport Layer Security WTLS protocol was developed to address the unique characteristics of wireless networks, namely low bandwidth and high latency.

Unfortunately, TLS cannot be used directly because it is not efficient enough for a wireless environment. WTLS improved on the efficiency of the protocol while adding new capabilities aimed at wireless users. Support for other cryptographic algorithms. Definition of a new compact public key certificate, WTLS certificates. These are a more efficient version of X. UDP datagram support. This impacts many areas of the protocol, from how data is encrypted to extra support for message handling, to ensure messages do not get lost, duplicated, or delivered out of order.

A key refresh option. This is renegotiated periodically, based on the number of messages sent. An expanded set of alerts. This adds clarity for error handling. Optimized handshakes. This reduces the number of round-trips required in high-latency networks. In addition to these changes, WTLS also introduced three levels of authentication between the client and the gateway.

They are listed in ascending order:. Anonymous interactions between the client and WAP gateway; no authentication takes place. The server authenticates itself to the client using WTLS certificates. Both the client and the WAP gateway authenticate to each other. This is the form of authentication used with smartcards. It is from this point, not from the WTLS protocol itself, that the security issues arise.

The content exists as plaintext while this transfer takes place, creating the so-called WAP gap. Keep in mind that the amount of time that the content is unencrypted is minimal, and that the WAP gateway is not in the public domain, so there is still security in place.

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However, for many corporations, this risk is still too great, as it presents a vulnerable point in the network, preventing end-to-end security. Accept that the gateway is a vulnerable point and make every effort to protect it using firewalls, monitoring equipment, and a stringent security policy.

Choosing between these two options is a business decision that will depend on the individual enterprise. It is a trade-off between the extra resources required to maintain a WAP gateway and the potential security threat to corporate data. Fortunately, a solution is available, in the form of WAP 2. There are many new features in WAP 2. Once a single protocol can be used from the client device to the enterprise server, WAP can enable true end-to-end security, making the WAP gap a thing of the past. Nevertheless, it provides new life for WAP in the wireless Internet space.

For a complete summary of WAP 1. With so much attention given to the WAP gap and transport-level security, developers often forget about application-level security altogether. Application-level security is important for two main reasons: 1 when security is required past the endpoints of transport-level security, and 2 when presentation content needs to be accessed but enterprise data does not. The first scenario can be addressed using the techniques provided in the WML specification.

In general, the default settings are set to the highest security, but the following are a few things to keep an eye on:. Relying on the phone's identity alone is not sufficient.


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Using this signText function in the API, digital signatures can be created, opening the door for wireless PKI to manage and issue public key certificates. This technology allows for end-to-end encryption between the content provider usually the enterprise and the client. Toggle navigation.

Like any modern construction, it first has to be meticulously designed, and network security architects are an important part of these design teams. Originally, the first internetworks did , in fact, emerge largely from chaos. Small groups of academics and researchers in various universities and government departments cobbled together basic systems and protocols to connect with one another.

Not surprisingly, perhaps, these systems were rife with bugs and security holes. To eliminate the inefficiencies and unreliability, the field of enterprise architecture slowly emerged to provide top-down planning for large-scale networks. And to secure the large, complicated systems that resulted from those efforts, the sub-specialty of network security architecture evolved to cast a suspicious eye across the designs, and to alter them to provide a greater level of security.

The program prepares students with the necessary foundations for the design and development of assured, secure computer systems in order to predict, prevent, and respond to cyber attacks. Bachelor's degree is required. Request Information. The UC Berkeley School of Information's Online Master of Information and Cybersecurity prepares students with the technical, conceptual, and practical skills needed for a professional career in cybersecurity.

Complete in 20 Months. Request information. Today, network security architects are indispensable members of enterprise architecture teams. While other architects worry about LAN Local Area Network cabling runs, router installations, and data storage requirements, network security architects spend their days heading off accidental or nefarious vulnerabilities with tools and techniques that include:.


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Keep reading to find out more. Before I talk about the technical attacks that target Wi-Fi, I would like to dispel a few myths and raise awareness in the security issues of Wi-Fi, namely open, public, and customer Wi-Fi networks. Something unique to them all is that they're not secure for the most part.

As with anything, there are exceptions, but this post is dealing with the majority vice exceptions. Working in reverse, in using customer networks, you are giving up security in two regards: you're connecting to a network that may or may not require a password that anyone can obtain.

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What Is Network Security?

You have no way to ascertain the security of the network or even verify and validate that it is truly the network and not an "Evil Twin". Furthermore, while not dangerous yet still annoying, the stores can also monitor your connections and dependent upon the fine print you click "OK" in order to connect, they could query your device and get data about you. This data could be the apps you have installed, location data, and others.

These stores also have NO legal obligation or responsibility to protect your device or data on their network. Moral obligations and responsibilities are a different story. While they may not have the same intentions as retail stores, there is no level of assurance or legal obligation for them to secure your device or data.

You should question why this network exists, especially if the connection is free. You are probably the "product" via data mining like retail stores above or via advertising. Open Wi-Fi networks are bastions for malicious intent.

Internet security - Wikipedia

While some people genuinely want to share and others are ignorant as to the possible outcomes or the ability to secure the networks, others blatantly leave the networks open. If you are connecting to a network that is named after an establishment, you should check to verify they even have a Wi-Fi network before connecting. Many attackers will name their networks after establishments to get people to connect so they can steal their data see below.

You should also thoroughly research any VPN Applications or Software you use to ensure that it is legitimate and that the provider is committed to keeping you safe. This is the act of driving around neighborhoods and areas to enumerate what wireless networks exist, what type of encryption if any is used, password if known , and any other pertinent information.

This information may chalked or painted to the street or side walk or posted to various websites. Some websites, like SkyHook ask their users for this.

Wireless Internet Security: Architecture and Protocols Wireless Internet Security: Architecture and Protocols
Wireless Internet Security: Architecture and Protocols Wireless Internet Security: Architecture and Protocols
Wireless Internet Security: Architecture and Protocols Wireless Internet Security: Architecture and Protocols
Wireless Internet Security: Architecture and Protocols Wireless Internet Security: Architecture and Protocols
Wireless Internet Security: Architecture and Protocols Wireless Internet Security: Architecture and Protocols
Wireless Internet Security: Architecture and Protocols Wireless Internet Security: Architecture and Protocols

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